For the Refrigerator Door: Tired of being tired? Track your sleep

Leigh Honeywell, 28, of Seattle, made a resolution for 2012: Get more sleep.

More than a year later, the computer security manager says she's keeping that promise and owes credit to a little device she wears on a wrist strap at night.

The device is a Fitbit One, one of a growing number of gadgets consumers can buy to track their health habits, including sleep. The devices typically use movement detectors called accelerometers, which can count your steps during the day but also can detect sleep patterns by tracking your arm movements at night. You download the data to your computer or mobile device - and get multicolored charts showing how long you were in bed and how much of the time the device sensed that you were asleep or awake.

Some experts are skeptical. They say, and manufacturers agree, that these trackers are no substitute for medical advice for serious sleep problems. Still, Honeywell says, seeing her patterns made a difference in her once sleep-deprived life.

Eric Friedman, Fitbit's chief technology officer, says one user saw he was waking up 83 times a night and went to a doctor. He had sleep apnea, a breathing disorder. Says Friedman: "We hear those stories all the time."

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For the Refrigerator Door: Tired of being tired? Track your sleep

There is a growing number of gadgets consumers can buy to track their health habits, including sleep.